Great Plains DVN8324 Operator Manual - Manual (Page 61)

Great Plains Manufacturing, Inc. Troubleshooting 57
11/25/2013 550-466M
Machine Plugging Coulter/disc gangs running deeper than
sweeps.
Machine not level front to back.
Too much residue in the rows.
Disc gangs not cutting residue.
Improperly spaced shanks.
Running too low.
Ground too wet.
Raise coulter/disc gangs.
Level machine front to rear with turnbuckle,
See “Front to Rear Leveling” on page 37.
Run at a slight angle to the rows.
Check for sharpness.
Check shank layout for proper shank place-
ment.
Speed up (9-11 km/h)/(6-7 m/h).
Allow ground to dry some.
Machine Bouncing Operating speed too fast. Slow down (9-11 km/h)/(6-7 m/h)
Uneven Working
Depth Lift cylinders out of phase.
Timed detent not set correctly.
Timed detent not allowing depth stop to
engage. Rephase (See Operators Manual).
Set flow for 0.5 after machine is raised.
Adjust detent timer to allow for depth stop to
engage.
Overheating Hydrau-
lic System Flow set to continuous. Disengage continuous flow.
Coulter/Disc Gang Performance
Problem Cause Solution
Coulter/Disc Blades
Do Not Penetrate Blades too dull.
Improper spring preload. Sharpen blades (if applicable).
Raise disc gangs.
Reset spring preload, See “Disc Gang
Depth Calibration” on page 38.
Coulter/Disc Gangs
Are Plugging Scrapers are not set properly.
Gangs are running too shallow.
Gangs are running too shallow.
Ground too wet.
Set scraper according to specs, See
“Scraper Settings” on page 39.
Increase gang depth or raise completely.
Fix leaking gang cylinder, See pages 30-31
of “Parts Manual”.
Allow ground to dry some.
Entire Coulter/Disc
Gang Depth Changes Gang circuit leak in tractor Completely extend/re phase cylinders peri-
odically.
Wing Coulter/Disc
Gangs Coming Out Of
Ground Leaking slave cylinder on same side as
wing. Repair or replace leaky cylinder, See pages
30-31 of “Parts Manual”.
Center Gang Section &
One Wing Gang Sec-
tion Leaking master cylinder opposite of the
wing gang section. Repair or replace leaky cylinder, See pages
26-27 of “Parts Manual”.
General Performance
Problem Cause Solution